Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 1892
interventional 1680
Observational 193
Registry 19

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 961
Biological 123
Biological|Drug 74
Drug|Other 62
Drug|Procedure 61
Biological|Drug|Procedure 44
Drug|placebo 33
Biological|Drug|Procedure|Radiation 31
Procedure 31
Drug|Procedure|Radiation 25
Other 24
Biological|Drug|Other 20
Drug|Other|Procedure|Radiation 17
Device 13
Biological|Other 12
Drug|Other|Procedure 11
Behavioral 10
Drug|Radiation 10
Biological|Drug|Radiation 9
Biological|Drug|Other|Procedure 8
Biological|Drug|Other|Procedure|Radiation 8
Biological|Procedure 6
Combination Product 6
Drug|Genetic 6
Dietary Supplement|Drug 4
Drug|Genetic|Other|Procedure 4
Other|Procedure 4
Behavioral|Drug 3
Biological|Drug|placebo 3
Biological|placebo 3
Device|Drug|Procedure 3
Behavioral|Drug|Procedure 2
Behavioral|Other 2
Biological|Genetic|Other 2
Biological|Radiation 2
Device|Drug|Other 2
Device|Other 2
Device|Radiation 2
Diagnostic Test 2
Dietary Supplement 2
Drug|Other|Radiation 2
Drug|placebo|Procedure 2
Genetic 2
Behavioral|Biological|Drug 1
Behavioral|Diagnostic Test|Other 1
Behavioral|Dietary Supplement|Other|Procedure 1
Behavioral|Drug|placebo 1
Biological|Device|Drug|Procedure|Radiation 1
Biological|Device|Drug|Radiation 1
Biological|Dietary Supplement|Drug|placebo 1
Biological|Drug|Genetic 1
Biological|Drug|Genetic|Other|Procedure 1
Biological|Drug|Genetic|Procedure|Radiation 1
Biological|Drug|Other|placebo 1
Biological|Other|Procedure 1
Combination Product|Drug 1
Device|Drug 1
Device|Other|Procedure 1
Device|Procedure 1
Diagnostic Test|Drug|Other 1
Dietary Supplement|Other|placebo 1
Dietary Supplement|placebo 1
Drug|Genetic|Other 1
Drug|Genetic|Procedure 1
Drug|Genetic|Procedure|Radiation 1
Drug|Other|placebo 1
Drug|Other|placebo|Procedure 1
Genetic|Radiation 1
Other|Radiation 1
Radiation 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 950
NA 65
China 64
France 41
Italy 31
United States|Canada 31
Germany 29
Canada 28
Spain 26
Japan 24
United Kingdom 23
Denmark 13
Korea, Republic of 13
Switzerland 9
Netherlands 8
United States|Italy 8
Australia 7
United States|Germany|Italy 6
Israel 5
Taiwan 5
United States|Australia 5
Austria 4
Poland 4
United States|Puerto Rico 4
Austria|Germany 3
Belgium 3
Belgium|France 3
Denmark|Norway|Sweden 3
Greece 3
India 3
Norway 3
Singapore 3
United States|France 3
United States|Israel 3
Austria|Czech Republic 2
Brazil 2
China|Taiwan 2
Finland 2
Hong Kong|Korea, Republic of|Singapore|Taiwan 2
Iceland 2
Ireland 2
Mexico 2
Russian Federation 2
Sweden 2
United States|Australia|Canada 2
United States|Australia|France 2
United States|Austria|Belgium|Canada|France|Germany|Ireland|Israel|Italy|Netherlands|Spain|Sweden|United Kingdom 2
United States|Denmark 2
United States|Denmark|Germany 2
United States|France|Spain 2
United States|Korea, Republic of 2
United States|United Kingdom 2
Australia|Austria|Belarus|Belgium|Czech Republic|Denmark|France|Georgia|Germany|Greece|Ireland|Israel|Italy|Netherlands|Poland|Russian Federation|Spain|Sweden|Switzerland|Turkey|Ukraine|United Kingdom 1
Australia|Austria|Belgium|France|Germany|Greece|Ireland|Israel|Italy|Poland|Spain|Sweden|Switzerland|Ukraine|United Kingdom 1
Australia|Austria|Ireland|Spain|United Kingdom 1
Australia|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Italy|Netherlands|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
Australia|Belgium|Czechia|Denmark|France|Greece|Italy|Netherlands|Norway|Poland|Spain|Switzerland|Turkey 1
Australia|China|Korea, Republic of 1
Australia|Denmark|Norway 1
Australia|France|Germany|Hungary|Korea, Republic of|Poland|Singapore|United Kingdom 1
Australia|France|Spain|United Kingdom 1
Australia|United States|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Greece|Hungary|Italy|Japan|New Zealand|Norway|Poland|Romania|Spain|Sweden|United Kingdom 1
Austria|Belgium|Denmark|Estonia|Finland|France|Germany|Greece|Ireland|Italy|Netherlands|Norway|Poland|Portugal|Slovakia|Spain|Sweden|Switzerland|Turkey|United Kingdom 1
Austria|Belgium|France|Germany|Greece|Luxembourg|Portugal|Spain 1
Austria|Czech Republic|Denmark|Germany|Greece|Sweden|Turkey|United Kingdom 1
Austria|Czechia|Denmark|Germany|Italy|Poland 1
Austria|Czechia|Germany 1
Austria|France|Germany|Greece|Italy|Netherlands|Spain|United Kingdom 1
Austria|France|Germany|Italy 1
Belarus 1
Belgium|Estonia|Lithuania|Sweden 1
Belgium|France|Germany 1
Belgium|France|Greece|Italy|Spain 1
Belgium|France|Korea, Republic of|Poland|Spain 1
Belgium|France|Netherlands 1
Belgium|France|Switzerland 1
Belgium|Israel|Spain 1
Belgium|United States|Australia|Austria|Bulgaria|Canada|Czechia|France|Germany|Greece|Hungary|India|Israel|Italy|Poland|Romania|Russian Federation|Serbia|Spain|Ukraine|United Kingdom 1
Bulgaria|Canada|United States|Australia|Belgium|Germany|Hungary|Ireland|Israel|Italy|Poland|Russian Federation|Spain|Switzerland|Ukraine|United Kingdom 1
Bulgaria|Croatia|Czechia|France|Germany|Hungary|India|Italy|Philippines|Poland|Portugal|Serbia|Slovakia|South Africa|United Kingdom 1
Canada|United States|Brazil|Czechia|France|Germany|Israel|Japan|Netherlands|Poland|Spain|Turkey|United Kingdom 1
China|Hong Kong|Korea, Republic of|Malaysia|Taiwan 1
Czech Republic|United Kingdom 1
Czechia|Denmark|France|Germany|Netherlands|Norway|Poland|Spain|Sweden 1
Czechia|Germany|Greece|Italy|Spain|Turkey 1
Czechia|Greece|Ireland|Italy 1
Czechia|Poland 1
Denmark|Finland|Iceland|Norway|Sweden 1
Denmark|Finland|Lithuania|Norway|Sweden 1
Denmark|Germany|Belgium|Czechia|Greece|Italy|Netherlands|Serbia|Spain|Turkey 1
Denmark|Germany|Ireland|United Kingdom 1
Finland|Lithuania|Norway|Sweden 1
Finland|Sweden 1
France|Germany 1
France|Germany|Italy|Spain 1
France|Italy 1
France|Spain 1
France|United Kingdom 1
France|United States|Australia|Austria|Belgium|Bulgaria|Canada|Czechia|Greece|Hungary|Japan|Korea, Republic of|Poland|Romania|Russian Federation|Spain|Taiwan|Turkey|United Kingdom 1
Germany|Greece 1
Germany|Israel|Italy 1
Germany|Italy 1
Germany|Italy|Spain|Sweden 1
Germany|Netherlands|United Kingdom 1
Greece|Italy|Netherlands 1
Greece|Italy|Turkey 1
Greece|United States|Australia|Austria|Belgium|Canada|Czechia|Germany|Hungary|Ireland|Israel|Italy|Poland|Puerto Rico|Romania|Russian Federation|Spain|Switzerland|Turkey|United Kingdom 1
Hong Kong|Japan|Korea, Republic of|Singapore|Taiwan 1
Hong Kong|Korea, Republic of|Singapore 1
India|Korea, Republic of|Singapore 1
Iraq 1
Ireland|United Kingdom 1
Israel|Italy|Poland|South Africa|United Kingdom 1
Italy|Netherlands 1
Italy|Switzerland 1
Korea, Republic of|United States|Austria|Belgium|Czechia|Denmark|Estonia|France|Greece|Hungary|Israel|Italy|Lithuania|Netherlands|Norway|Poland|Romania|Russian Federation|Spain|Taiwan|United Kingdom 1
Netherlands|United Kingdom 1
Poland|Serbia|France|Germany|Greece|Hungary|Lithuania|Spain|Turkey|United Kingdom 1
Portugal|Singapore|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Colombia|Czechia|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|Netherlands|Norway|Poland|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|Ukraine|United Kingdom 1
Russian Federation|Ukraine 1
Saudi Arabia 1
Slovakia|Spain|Sweden|United Kingdom|Serbia|Australia|Austria|Belgium|Czechia|France|Germany|Greece|Hungary|Israel|Italy|Korea, Republic of|New Zealand|Poland|Russian Federation 1
South Africa|United States|Argentina|Australia|Austria|Belgium|Canada|Czech Republic|France|Israel|Netherlands|Poland|Portugal|Russian Federation|Singapore|Spain|United Kingdom 1
Spain|France|Germany|Italy|Netherlands|Sweden|United Kingdom 1
Spain|Turkey|Ukraine|United States|Argentina|Australia|Belgium|Brazil|Bulgaria|Croatia|Czechia|Georgia|Germany|Greece|Hungary|Japan|Korea, Republic of|North Macedonia|Poland|Portugal|Romania|Russian Federation|Serbia|United Kingdom 1
Sweden|Spain|United States|Argentina|Australia|Belgium|Brazil|Canada|Czechia|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Mexico|Netherlands|Norway|Poland|Russian Federation|Turkey|United Kingdom 1
Sweden|Turkey|Portugal|Belgium|Finland|France|Germany|Israel|Netherlands|Norway|Poland 1
Taiwan|United Kingdom|United States|Australia|Austria|Belgium|Czechia|France|Germany|Greece|Ireland|Italy|Korea, Republic of|Netherlands|New Zealand|Poland|Portugal|Puerto Rico|Spain 1
Tunisia 1
Turkey 1
United States|Argentina 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|China|Colombia|Croatia|Czechia|Denmark|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|Mexico|Poland|Portugal|Russian Federation|Serbia|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Thailand|Turkey|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|China|Czechia|Denmark|Egypt|Finland|France|Germany|Greece|Hong Kong|Israel|Italy|Japan|Korea, Republic of|Lebanon|Mexico|Netherlands|Norway|Poland|Russian Federation|Singapore|South Africa|Spain|Sweden|Taiwan|Thailand|Turkey|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Bulgaria|Canada|China|Czechia|Korea, Republic of|France|Germany|Greece|Hungary|Israel|Italy|Japan|Taiwan|Mexico|Netherlands|New Zealand|Poland|Romania|Russian Federation|Singapore|Spain|Switzerland|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Mexico 1
United States|Australia|Austria|Belgium|Brazil|Bulgaria|Canada|Czechia|France|Germany|Greece|Hungary|Israel|Italy|Japan|Korea, Republic of|New Zealand|Poland|Romania|Russian Federation|Singapore|Slovakia|Spain|Taiwan|Thailand|Ukraine|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|China|France|Germany|Greece|Ireland|Italy|Korea, Republic of|New Zealand|Portugal|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Hungary|Ireland|Israel|Italy|Japan|Poland|Puerto Rico|Romania|Spain|Switzerland|Turkey|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|France|Germany|Ireland|Israel|Netherlands|Sweden|United Kingdom 1
United States|Australia|Austria|Bulgaria|Canada|Czechia|France|Germany|Greece|Hong Kong|Hungary|Ireland|Italy|Japan|Korea, Republic of|Lithuania|Malaysia|New Zealand|Poland|Portugal|Russian Federation|Singapore|Slovakia|Spain|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|Czechia|France|Germany|Greece|Hungary|Italy|Korea, Republic of|Lebanon|Netherlands|Norway|Poland|Portugal|Russian Federation|Spain|Sweden|Thailand|Turkey 1
United States|Australia|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Hungary|Italy|Japan|Korea, Republic of|New Zealand|Norway|Poland|Portugal|Russian Federation|Slovakia|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Israel|Italy|Netherlands|Norway|Russian Federation|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Belgium|Canada|Czechia|Denmark|France|Germany|Greece|Italy|Netherlands|Russian Federation|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|France|Germany|Greece|Israel|Japan|Korea, Republic of|Netherlands|Poland|Russian Federation|Spain|Sweden|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|Netherlands|Spain 1
United States|Australia|Belgium|China|Czechia|Denmark|France|Germany|Greece|Italy|Japan|Lithuania|Mexico|New Zealand|Poland|Portugal|Russian Federation|Spain|Sweden|Taiwan|Turkey 1
United States|Australia|Belgium|France|Germany|Greece|Israel|Korea, Republic of|Spain|Sweden|United Kingdom 1
United States|Australia|Belgium|France|Spain 1
United States|Australia|Belgium|Japan|Switzerland 1
United States|Australia|Brazil|Canada|Czechia|France|Greece|Hungary|Italy|Japan|Korea, Republic of|New Zealand|Russian Federation|Spain|Turkey|United Kingdom 1
United States|Australia|Brazil|Canada|Czechia|France|Greece|Hungary|Italy|Spain 1
United States|Australia|Brazil|Canada|Czechia|France|Greece|Israel|Italy|Japan|Korea, Republic of|Poland|Russian Federation|Spain|Sweden|Taiwan|Ukraine|United Kingdom 1
United States|Australia|Brazil|Czechia|Germany|Hungary|Korea, Republic of|Mexico|Netherlands|Poland|Russian Federation|Spain|Sweden|Turkey|Ukraine 1
United States|Australia|Canada|China|Czechia|France|Germany|Greece|Israel|Italy|Japan|Korea, Republic of|Russian Federation|Singapore|Spain|Sweden|Turkey|United Kingdom 1
United States|Australia|Canada|Czechia|France|Germany|Israel|Netherlands|Russian Federation|Turkey|United Kingdom 1
United States|Australia|Canada|Denmark|France|Germany 1
United States|Australia|Canada|France|Germany|Greece|Italy|Japan|Netherlands|Poland|Spain 1
United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Spain 1
United States|Australia|Canada|France|Germany|Italy|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Netherlands|Turkey 1
United States|Australia|Canada|Germany|Italy|Spain 1
United States|Australia|Canada|Germany|Japan 1
United States|Australia|Canada|India 1
United States|Australia|Canada|Ireland|Taiwan 1
United States|Australia|Canada|Netherlands|Spain|Sweden 1
United States|Australia|France|Germany|Italy|Japan|Spain 1
United States|Australia|France|Greece|Italy|Japan 1
United States|Australia|France|India|Israel|Korea, Republic of|Poland|Romania|Russian Federation|Singapore|Spain 1
United States|Australia|France|Israel|Japan|Spain|Taiwan 1
United States|Australia|France|Poland 1
United States|Australia|France|Spain 1
United States|Australia|France|Spain|United Kingdom 1
United States|Australia|Germany 1
United States|Australia|Germany|Italy|Singapore 1
United States|Australia|Germany|Japan|Netherlands 1
United States|Australia|Germany|Singapore|Spain 1
United States|Australia|Greece 1
United States|Australia|Greece|Poland|Sweden 1
United States|Australia|Hungary|Puerto Rico|Spain 1
United States|Australia|Israel|Norway 1
United States|Australia|Korea, Republic of 1
United States|Australia|Spain 1
United States|Australia|United Kingdom 1
United States|Austria|Belgium|Bulgaria|Canada|Czechia|France|Germany|Greece|Hungary|Israel|Italy|Netherlands|Poland|Romania|Russian Federation|Serbia|Spain|Sweden|United Kingdom 1
United States|Austria|Belgium|France|Germany|Greece 1
United States|Austria|Canada|Czechia|Denmark|Germany|Greece|Israel|Italy|Norway|Portugal|Puerto Rico|Spain|Sweden|Switzerland 1
United States|Austria|Canada|Denmark|Finland|France|Germany|Greece|Ireland|Israel|Italy|Japan|Netherlands|Norway|Poland|Portugal|Puerto Rico|Russian Federation|Spain|Sweden|Turkey|United Kingdom 1
United States|Austria|Greece|Netherlands|Spain|Sweden 1
United States|Belgium 1
United States|Belgium|Brazil|Bulgaria|Canada|Czechia|France|Germany|Greece|Hungary|Netherlands|Poland|Portugal|Romania|Russian Federation|Slovakia|Spain|United Kingdom 1
United States|Belgium|Brazil|Canada|Denmark|France|Germany|Greece|Italy|Netherlands|Poland|Russian Federation|Spain 1
United States|Belgium|Canada|China|Greece|Korea, Republic of|Poland|Singapore|Spain|Sweden 1
United States|Belgium|Canada|Czech Republic|Finland|France|Germany|Greece|Israel|Slovakia|Switzerland|Turkey|United Kingdom 1
United States|Belgium|Canada|Denmark|Germany|Italy|Spain|Sweden|United Kingdom 1
United States|Belgium|Canada|France|Germany|Greece|Spain|United Kingdom 1
United States|Belgium|Canada|France|Germany|Italy|Japan|Netherlands|Norway|Spain|Sweden 1
United States|Belgium|Canada|France|Germany|Italy|Japan|Spain 1
United States|Belgium|Canada|France|Korea, Republic of|New Zealand|Russian Federation 1
United States|Belgium|Denmark|Sweden 1
United States|Belgium|France|Germany|Israel|Netherlands|Spain 1
United States|Belgium|France|Greece|Italy|Poland 1
United States|Belgium|France|Italy|Spain 1
United States|Belgium|France|Netherlands|Spain|Sweden 1
United States|Belgium|France|Norway 1
United States|Belgium|Russian Federation 1
United States|Brazil|Canada|France|Germany|Greece|Italy|Korea, Republic of|Mexico|Netherlands|Poland|Spain|Taiwan|Turkey|United Kingdom 1
United States|Brazil|Czechia|France|Germany|Israel|Japan|Spain|United Kingdom 1
United States|Bulgaria|Czechia|France|Germany|Greece|Japan|Netherlands|Romania|Russian Federation|Spain|Sweden|Turkey 1
United States|Canada|Czechia|Denmark|France|Germany|Greece|Italy|Spain 1
United States|Canada|Czechia|Spain|United Kingdom 1
United States|Canada|Denmark|Finland|Germany|Italy|Netherlands|Spain 1
United States|Canada|Denmark|Finland|Spain|United Kingdom 1
United States|Canada|France|Germany|Italy|Japan|Netherlands|Spain|United Kingdom 1
United States|Canada|France|Germany|Italy|Netherlands|Spain 1
United States|Canada|France|Italy|Poland 1
United States|Canada|France|Italy|Spain 1
United States|Canada|Germany 1
United States|Canada|Germany|Netherlands|Spain 1
United States|Canada|Germany|Spain 1
United States|Canada|Greece|Italy 1
United States|Canada|Israel|Italy|Russian Federation 1
United States|Canada|Italy 1
United States|Canada|Japan|Puerto Rico 1
United States|Canada|Spain 1
United States|Canada|United Kingdom 1
United States|China|France|Germany|Spain|United Kingdom 1
United States|Czech Republic|Germany 1
United States|Czechia|France 1
United States|Czechia|France|Greece|Netherlands|Poland 1
United States|Czechia|France|Spain 1
United States|Denmark|France|Netherlands|Spain|Sweden 1
United States|Denmark|France|Netherlands|United Kingdom 1
United States|Denmark|Italy|Netherlands|Sweden 1
United States|Denmark|Netherlands|Sweden 1
United States|Denmark|Norway|United Kingdom 1
United States|France|Germany 1
United States|France|Germany|Greece|Spain 1
United States|France|Germany|Spain|United Kingdom 1
United States|France|Italy|Netherlands|Spain|Switzerland 1
United States|France|Italy|Spain 1
United States|France|Korea, Republic of 1
United States|France|Netherlands 1
United States|France|Spain|United Kingdom 1
United States|Germany 1
United States|Germany|Italy|Spain 1
United States|Germany|Singapore|Spain 1
United States|Germany|Spain 1
United States|Germany|Spain|Sweden 1
United States|Greece|Italy|Poland 1
United States|Ireland|Puerto Rico 1
United States|Japan 1
United States|Netherlands 1
United States|Netherlands|Spain 1
United States|Peru|South Africa 1
United States|Philippines|United Kingdom 1
United States|Poland 1
United States|Puerto Rico|Saudi Arabia 1
United States|Puerto Rico|South Africa 1
United States|Singapore 1
United States|Spain 1
United States|Spain|United Kingdom 1
United States|Sweden 1

Sites per Study

Site_count Study_Count
1 823
2 118
3 70
4 55
5 68
6 41
7 37
8 40
9 40
10 37
11 28
12 20
13 22
14 17
15 6
16 13
17 12
18 9
19 12
20 9
21 7
22 8
23 5
24 8
25 2
26 6
27 4
28 6
29 2
30 7
31 5
32 3
33 3
34 5
35 4
36 2
37 3
38 3
39 3
40 5
41 1
42 2
43 2
44 1
45 1
46 2
47 1
48 1
49 4
54 2
55 2
56 1
57 2
58 1
59 2
60 1
61 1
63 2
64 3
68 4
69 2
70 2
71 1
73 1
74 2
76 1
77 3
78 1
79 1
80 1
82 1
84 1
86 2
91 2
92 1
93 1
94 1
95 1
98 1
99 1
105 1
107 2
109 1
110 1
111 2
112 1
114 1
115 1
117 1
121 1
127 1
128 1
138 1
140 2
141 1
145 1
147 1
148 1
157 1
163 1
165 2
178 1
198 1
210 1
213 1
215 1
224 1
235 1
241 1
248 1
278 1
288 1
309 1
326 1
336 1
393 1
417 1
485 1
498 1
504 1
505 1
506 1
613 1
920 1
1328 1

Phase

Phase Study_Count
Phase 2 663
Phase 1 398
Phase 1/Phase 2 232
Phase 3 219
N/A 112
Phase 4 25
Early Phase 1 18
Phase 2/Phase 3 13

Number of Arms

Number_of_Arms Count_of_Studies
1 824
2 397
3 102
4 46
5 24
6 13
7 8
8 4
9 2
10 3
11 5
12 2
13 2
17 1
21 1
37 1
NA 245

Number of Updates

Count of Versions Count of Studies
1 64
2 107
3 75
4 93
5 95
6 74
7 65
8 80
9 90
10 78
11 57
12 60
13 58
14 41
15 44
16 37
17 43
18 46
19 28
20 35
21 23
22 31
23 20
24 19
25 26
26 24
27 17
28 14
29 12
30 15
31 9
32 11
33 5
34 6
35 12
36 9
37 5
38 9
39 8
40 5
41 8
42 6
43 2
44 5
45 2
46 6
47 5
48 4
49 4
50 6
51 6
52 4
53 5
54 1
55 4
57 1
58 1
59 3
60 1
61 2
62 3
63 2
65 1
66 4
67 2
68 1
69 2
70 1
71 3
72 1
73 1
74 1
76 1
77 1
80 2
81 2
83 1
88 1
93 1
96 1
97 1
101 1
109 1
114 2
115 1
117 2
121 1
123 1
143 1
148 1
158 1
174 1
203 1
213 1
259 1
415 1
443 1
456 1
881 1
1004 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 28866 1616 17.862624
Contacts/Locations 12626 1486 8.496635
Arms 3196 1084 2.948339
Interventions 3196 1084 2.948339
Recruitment Status 3164 1450 2.182069
Study Design 2837 1238 2.291599
Eligibility 2682 1054 2.544592
Study Identification 2449 1006 2.434394
Study Description 2271 868 2.616359
Outcome Measures 2208 973 2.269270
Conditions 1979 647 3.058733
Sponsor/Collaborators 1916 969 1.977296
None (earliest Version on record) 1680 1680 1.000000
Oversight 1337 898 1.488864
More Information 893 255 3.501961
References 733 397 1.846348
Results 363 363 1.000000
IPDSharing 214 176 1.215909
Baseline Characteristics 174 126 1.380952
Reported Adverse Events 101 86 1.174419
Participant Flow 88 72 1.222222
Results Submission Events 83 83 1.000000
Documents 82 80 1.025000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 6.00000 2.0000 1.00000 3.00000 2.00000 4.0000 14.0000 18.0000
1st Qu. 11.25000 20.0000 18.00000 31.00000 30.00000 22.0000 180.0000 49.2500
Median 16.50000 50.0000 30.00000 50.00000 46.00000 86.0000 316.0000 111.5000
Mean 21.27778 811.4037 44.62304 69.26906 88.25359 139.2308 417.9187 135.4583
3rd Qu. 20.00000 100.0000 57.50000 80.00000 83.50000 169.0000 522.0000 164.7500
Max. 100.00000 80761.0000 335.00000 449.00000 6452.00000 400.0000 4420.0000 500.0000

Trial Group Type

group_type Group_Count
Experimental 2156
Active Comparator 289
NA 245
Other 96
Placebo Comparator 44
No Intervention 32
Sham Comparator 5

Intervention Model

intervention_model Study_Count
Single Group Assignment 987
Parallel Assignment 491
NA 113
Sequential Assignment 68
Crossover Assignment 16
Factorial Assignment 5

Primary Purpose

primary_purpose Study_Count
Treatment 1494
Supportive Care 84
Prevention 33
Diagnostic 23
Other 15
NA 14
Basic Science 7
Screening 5
Health Services Research 4
Device Feasibility 1

Observational Studies

Studies by Country

Country Study_Count
United States 70
NA 19
France 17
Italy 11
Korea, Republic of 8
Spain 8
Germany 7
Japan 7
Greece 4
United Kingdom 4
Denmark 3
Netherlands 3
Turkey 3
Austria 2
China 2
Norway 2
United States|Canada 2
Argentina|Brazil|Chile|Colombia|Guatemala|Mexico|Panama 1
Austria|Belgium|Bulgaria|Czechia|France|Greece|Israel|Italy|Netherlands|Norway|Romania 1
Belgium 1
Brazil 1
Canada 1
Czech Republic 1
Germany|Austria|Belgium|Czech Republic|France|Hungary|Italy|Poland|Romania|Spain|Switzerland|United Kingdom 1
Guadeloupe|Martinique 1
Italy|United Kingdom 1
Mexico 1
Russian Federation 1
Russian Federation|Algeria|Austria|Croatia|Denmark|Estonia|France|Germany|Greece|Hungary|Israel|Latvia|Lithuania|Macedonia, The Former Yugoslav Republic of|Poland|Portugal|Slovenia|South Africa|Spain|Turkey|Ukraine 1
Sweden 1
Switzerland 1
Taiwan 1
United States|Belgium|Brazil|China|Colombia|France|Germany|Greece|Israel|Italy|Mexico|Spain|Taiwan|Turkey|United Kingdom 1
United States|Belgium|France|Germany|Italy|Netherlands|Poland|Russian Federation|Spain|United Kingdom 1
United States|Canada|France|Germany|Italy|United Kingdom 1
United States|Canada|Spain 1
United States|Mexico|Saudi Arabia 1
United States|Puerto Rico 1

Sites per Study

Site_count Study_Count
1 120
2 10
3 4
4 1
5 2
6 4
7 2
8 1
9 4
10 3
13 2
15 1
16 1
20 6
21 1
22 1
23 1
24 1
25 1
27 2
28 1
29 1
30 1
35 1
38 1
39 1
40 1
44 2
65 1
69 1
73 1
81 1
94 1
112 1
120 1
126 1
137 2
138 1
144 1
161 1
207 1
253 1
453 1

Number of Updates

Count of Versions Count of Studies
1 19
2 22
3 17
4 18
5 17
6 9
7 10
8 15
9 6
10 7
11 7
12 2
13 4
14 3
16 3
17 3
18 1
20 1
22 1
23 1
24 1
30 3
33 1
34 1
36 1
37 1
39 1
44 2
48 2
53 1
61 1
69 1
73 1
88 1
101 1
108 1
112 1
116 1
119 1
144 1
165 1
250 1
391 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 3149 174 18.097701
Contacts/Locations 1604 144 11.138889
Study Description 332 68 4.882353
Study Design 259 126 2.055556
Recruitment Status 213 134 1.589552
None (earliest Version on record) 193 193 1.000000
Eligibility 184 76 2.421053
Study Identification 135 79 1.708861
Sponsor/Collaborators 124 87 1.425287
Conditions 116 44 2.636364
Outcome Measures 111 73 1.520548
Groups 95 58 1.637931
Interventions 95 58 1.637931
Oversight 83 63 1.317460
References 60 36 1.666667
More Information 16 2 8.000000
IPDSharing 8 8 1.000000
Results 3 3 1.000000
Documents 2 2 1.000000
Baseline Characteristics 1 1 1.000000
Results Submission Events 1 1 1.000000

Enrollment Metrics

Measure Observational
Min 7.000
1st Qu 60.500
Median 196.000
Mean 2105.749
3rd Qu 600.000
Max 99999.000

Observation Model

observational_model Study_Count
Cohort 92
Case-Only 55
Other 19
NA 11
Case-Control 8
Case Control 6
Family-Based 2

Time Perspective

time_perspective Study_Count
Prospective 144
Retrospective 27
NA 9
Cross-Sectional 6
Other 6
Longitudinal, Prospective 1

Registries

Studies by Country

Country Study_Count
United States 7
France 2
Algeria|Belgium|France|Lebanon 1
Argentina|Brazil|Colombia|Mexico|Panama 1
Austria|Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Norway|Spain|Sweden|United Kingdom 1
Belgium|Denmark|Germany|Italy|Norway|Spain|Sweden|United Kingdom 1
China 1
Germany 1
Malaysia 1
NA 1
Portugal 1
Taiwan 1

Sites per Study

Site_count Study_Count
1 11
2 1
7 1
12 1
20 1
33 1
75 1
118 1
135 1

Number of Updates

Count of Versions Count of Studies
1 5
3 1
4 1
5 2
6 3
7 2
11 1
12 1
14 1
15 1
23 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 110 14 7.857143
Contacts/Locations 51 12 4.250000
None (earliest Version on record) 19 19 1.000000
Study Design 16 7 2.285714
References 12 5 2.400000
Study Identification 12 6 2.000000
Recruitment Status 9 7 1.285714
Conditions 8 4 2.000000
Eligibility 7 5 1.400000
Oversight 7 7 1.000000
Sponsor/Collaborators 7 5 1.400000
Outcome Measures 6 5 1.200000
Study Description 6 4 1.500000
Groups 3 3 1.000000
Interventions 3 3 1.000000
IPDSharing 3 2 1.500000

Enrollment Metrics

Measure Registries
Min 100.00
1st Qu 350.00
Median 1000.00
Mean 54530.89
3rd Qu 2897.50
Max 999999.00

Registry Model

observational_model Study_Count
Cohort 14
Other 3
Case-Only 1
Ecologic or Community 1

Time Perspective

time_perspective Study_Count
Prospective 17
Cross-Sectional 1
Other 1

Follow-up

target_duration Study_Count
10 Years 5
5 Years 4
1 Year 2
2 Years 2
1 Day 1
24 Months 1
3 Years 1
36 Months 1
8 Years 1
80 Years 1